11=x+x-9

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Solution for 11=x+x-9 equation: 


Simplifying
11 = x + x + -9

Reorder the terms:
11 = -9 + x + x

Combine like terms: x + x = 2x
11 = -9 + 2x

Solving
11 = -9 + 2x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2x' to each side of the equation.
11 + -2x = -9 + 2x + -2x

Combine like terms: 2x + -2x = 0
11 + -2x = -9 + 0
11 + -2x = -9

Add '-11' to each side of the equation.
11 + -11 + -2x = -9 + -11

Combine like terms: 11 + -11 = 0
0 + -2x = -9 + -11
-2x = -9 + -11

Combine like terms: -9 + -11 = -20
-2x = -20

Divide each side by '-2'.
x = 10

Simplifying
x = 10

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